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AD-DTC143XM

Public Made by Adom

by adom

Changjing Digital Transistors, SOT-723. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AD-DTC143XM

Changjing · Digital Transistors · SOT-723

AD-DTC143XM from Changjing, in a SOT-723. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN input Input of the NPN digital transistor, connected through built-in R1 (4.7 kΩ typ) to the base; input voltage range -7 to 20 V, VI(off) min 0.3 V and VI(on) max 2.5 V.
2 GND power_in Ground, connected to the emitter and to R2 of the built-in bias network.
3 OUT output Output at the NPN collector; rated up to 100 mA output current and 50 V supply voltage, with VO(on) of 0.1 V typ (0.3 V max) at 10 mA.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-723
Category Transistors/Thyristors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input voltage (off) VI(off) 0.3 V VCC = 5V, IO = 100µA 3
Input voltage (on) VI(on) 2.5 V VO = 0.3V, IO = 20mA 3
Output voltage (on) VO(on) 0.1 0.3 V IO/II = 10mA/0.5mA 3
Input current II 1.8 mA VI = 5V 3
Output current (off) IO(off) 0.5 µA VCC = 50V, VI = 0V 3
DC current gain GI 30 - VO = 5V, IO = 10mA 3
Input resistance R1 3.29 4.7 6.11 kΩ 3
Resistance ratio R2/R1 1.7 2.1 2.6 - 3
Supply voltage VCC 50 V 3
Input voltage VIN -7 20 V 3
Output current IO 100 mA Tj = 25°C (footnote 1) 3
Maximum power dissipation (SOT-723, M column) PD 100 mW Tj = 25°C (footnote 1) 3
Operating junction and storage temperature range Tj, Tstg -55 150 °C 3

CAD (KiCad official)

  • Symbol: AD-DTC143XM
  • Footprint: Package_TO_SOT_SMD:SOT-723
  • 3D model: SOT-723, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.5 mm nominal SOT-723 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: ad-dtc143xm-etched.step / ad-dtc143xm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad-dtc143xm.step / ad-dtc143xm.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Changjing datasheet (17 pp, sha256 4501c1e54b9bf20e, retrieved 2026-10-17, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF